Cellulose etherke cellulose ea tlhaho (e hloekisitsoeng k'hothone le makhasi a lehong, joalo-joalo) e le lisebelisoa tse tala, ka mor'a etherification ea mefuta e fapaneng ya derivatives, ke selulose macromolecule hydroxyl haedrojene ka sehlopha sa ether ka mokhoa o sa fellang kapa ka ho feletseng nkeloa sebaka ka mor'a ho thehoa ha lihlahisoa, ke derivatives theosa le noka ea selulose. Cellulose e ka qhibiliha ka metsing, ea hlapolla tharollo ea alkali le mokelikeli oa tlhaho ka mor'a etherification, 'me e na le thepa ea thermoplastic. Cellulose ether mefuta e fapaneng, ho pharaletseng sebelisoa kahong, samente, barbotage, meriana, lijo, peterole, letsatsi le letsatsi lik'hemik'hale, masela, pampiri le likarolo tsa elektronike le liindasteri tse ling. Ho ea ka palo ea substituents ka aroloa ka ether e le 'ngoe le tsoakiloeng ether, ho ea ka ionization ka aroloa ka ionic selulose ether le non-ionic selulose ether. Hajoale, ts'ebetso ea tlhahiso ea lihlahisoa tsa ionic cellulose ether ionic e butsoitse, e bonolo ho e etsa ebile e theko e tlase, litšitiso tsa indasteri tse batlang li le tlase, tse sebelisoang haholo ho li-additives tsa lijo, li-additives tsa masela, lik'hemik'hale tsa letsatsi le letsatsi le masimo a mang, ke lihlahisoa tse ka sehloohong tsa tlhahiso 'marakeng.
Hajoale, ether e kholo ea lefats'e ea cellulose keCMC, HPMC, MC, HECle tse ling tse ngata,CMCtlhahiso ke eona e kholo ka ho fetisisa, e ikarabellang hoo e ka bang halofo ea lihlahisoa tsa lefats'e, ha HPMC le MC ka bobeli li etsa karolo ea 33% ea tlhoko ea lefats'e, HEC e nka karolo ea 13% ea 'maraka oa lefats'e. Tšebeliso ea bohlokoa ka ho fetisisa ea carboxymethyl cellulose (CMC) ke sesepa, se ikarabellang bakeng sa hoo e ka bang 22% ea tlhokahalo ea 'maraka o tlaase,' me lihlahisoa tse ling li sebelisoa haholo ho thepa ea mohaho, lijo le meriana.
Ii. Kopo e tlase
Nakong e fetileng, ka lebaka la tlhokahalo e fokolang ea nts'etsopele ea cellulose ether lik'hemik'hale tsa letsatsi le letsatsi, meriana, lijo, liphahlo le masimo a mang Chaena, tlhokahalo ea cellulose ether Chaena e tsepamisitsoe haholo tšimong ea thepa ea mohaho, ho fihlela kajeno, indasteri ea thepa ea mohaho e ntse e nka 33% ea tlhoko ea cellulose ether Chaena. 'Me joalo ka selulose ether ea Chaena tšimong ea tlhokahalo ea thepa ea mohaho e se e tletse, lik'hemik'hale tsa letsatsi le letsatsi, meriana, lijo, ho roala le likarolo tse ling tsa tlhokahalo li ntse li hōla ka potlako ka nts'etsopele ea theknoloji ea kopo. Ka mohlala, lilemong tsa morao tjena, capsule ea semela e nang le cellulose ether e le eona ntho e ka sehloohong e tala, hammoho le lihlahisoa tse hlahang tse entsoeng ka nama ea maiketsetso e nang le cellulose ether e na le menyetla e pharaletseng ea tlhokahalo le sebaka sa kholo.
Lefapheng la thepa ea mohaho, mohlala, selulose ether le thickening, ho boloka metsi, condensation butle le litšobotsi tse ling tse babatsehang, kahoo thepa ea ho haha grade cellulose ether e sebelisoa haholo ho ntlafatsa tshebetso ya thepa ea mohaho lihlahisoa, ho akarelletsa le seretse se lokiselitsoeng-motsoako (ho kenyeletsoa seretse se metsi se tsoakiloeng le seretse se omileng), tlhahiso ea PVC ea resin, pente ea latex, ho ntlafatsoa ha mehaho ea litoropo, joalo-joalo. indasteri ea thepa, boemo ba mechine ea kaho e ntse e ntlafala, 'me litlhoko tsa tikoloho tsa bareki bakeng sa thepa ea mohaho li ntse li phahama le ho feta, e leng se lebisang ho tlhokahalo ea ether e seng ea ionic cellulose tšimong ea thepa ea mohaho. Nakong ea Moralo oa Lilemo tse Hlano oa 13, China e potlakisitse tokiso ea libaka tse sohlokehileng le matlo a sohlokehileng metseng e meholo, le ho matlafatsa khaho ea meaho ea litoropo, ho kenyeletsoa ho potlakisa tokiso ea libaka le metsana e matsutla-tsutla e metseng e meholo, le ho khothaletsa tokiso e phethahetseng ea libaka tsa khale tsa bolulo le nchafatso ea matlo a khale a senyehileng le matlo a sa lokisoang. Karolong ea pele ea 2021, sebaka sa bolulo sa lisekoere-mithara tse limilione tse 755.15 se ile sa qala, hoo e ka bang karolo ea 5.5 lekholong. Sebaka sa bolulo se phethiloeng ke lisekoere-mithara tse limilione tse 364.81, ho fihla ho 25.7%. Ho khutlisetsoa morao ha sebaka se phethiloeng sa thekiso ea matlo le meaho ho tla tsamaisa tlhokahalo e nepahetseng tšimong ea thepa ea moaho ea cellulose ether.
3. Mokhoa oa tlhōlisano ea 'maraka
China ke lefats'e la tlhahiso ea cellulose ether ea lefats'e, sethaleng sa hona joale sa thepa ea kaho ea thepa ea lehae ea selulose ether ha e le hantle e finyelletse sebaka, Anxin Chemistry e etellang pele likhoebo lefapheng la cellulose ether, bahlahisi ba bang ba ka sehloohong ba malapeng le bona ba kenyelletsa Kima Chemical joalo-joalo Boemo ba ho roala, pharmaceutical food grade cellulose ether hona joale haholo-holo United States Dow, Korea Boroa, Ashland, South Korea, South Korea, South Korea Dow, South Korea, South Korea. Ho phaella ho Anxin k'hemistri 'maloa tse fetang likete tse leshome lithane tse lik'hamphani, likete tsa lithane tse non-ionic selulose ether nyenyane tlhahiso likhoebong, boholo ba likhoebo tse nyenyane tse hlahisa e tloaelehileng ea mohlala thepa ea mohaho kereiti cellulose ether,' me ha ho na matla a ho hlahisa ho feta phahameng-qetellong lijo le lihlahisoa tsa meriana.
Nne, boemo ba ho kenya le ho romela thepa ka ntle ho cellulose ether
Ka 2020, ka lebaka la seoa sa mose ho maoatle se lebisitseng ho theoheng ha matla a tlhahiso ea likhoebo tsa kantle ho naha, thepa ea China ea cellulose ether e bonts'itse kholo e potlakileng, ka 2020 ho fihlela thomello ea lithane tse 77,272 tsa cellulose ether. Le hoja palo ea thomello ea cellulose ether Chaena e ntse e hōla ka potlako, lihlahisoa tsa thepa e tsoang linaheng tse ling li thehiloe haholo-holo holim'a thepa ea mohaho cellulose ether, ha palo ea thepa e tsoang linaheng tse ling ea ether ea bongaka le e jeoang ea cellulose e nyenyane haholo, 'me boleng bo ekelitsoeng ba lihlahisoa tse tsoang linaheng tse ling bo tlaase. Hajoale, bophahamo ba thomello ea cellulose ether naheng ea China bo mena ka makhetlo a mane ho feta thepa e tsoang kantle ho naha, empa palo ea thomello e ka tlase ho makhetlo a mabeli ea chelete e tsoang kantle ho naha. Tšimong ea lihlahisoa tse phahameng tsa malapeng cellulose ether ether substitution process e ntse e le sebaka se seholo sa nts'etsopele.
Nako ea poso: Apr-25-2024